The opposition leader's wife, Catherine Andrews, was driving a government funded vehicle when it was involved in a collision with a 15 year-old cyclist on January 7.

The teenager, Ryan Meuleman, was flown by helicopter to the Royal Children's Hospital and suffered internal bleeding and damage to his spleen and lung.

Mr Meuleman's father has told a Melbourne newspaper he is disappointed the opposition leader and his wife have not apologised to his son.

However Mr Andrews has defended his actions on Mornings with Bruce Guthrie, saying he did not wish to interfere with a police investigation.

"The police made it very clear that they would speak to the family and that was the appropriate thing to do. I want to be very clear about this for your listeners, the last thing I was going to do was to be trying to speak to young Ryan before the Victoria Police had spoken to him. That would not have been appropriate," Mr Andrews says.

Mr Andrews says following the incident his wife rang the Police five times to get "regular updates" on the boy's progress.

"We have been absolutely concerned about his wellbeing. His father may not know that and he may assume that we've not been interested. Well Bruce, your listeners need to know nothing can be further from the truth."